Improvement in pise and bubglab-pboof safes



PATENTED AUG. 11, 1868.

1). FITZGERALD. FIRE AND BURGLAR PROOF SAFE.

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Letters Patent No. 80,936, dated August 11, 1868.

. IMPROVEMENT IN FIRE AND BURGLA'It-PROOF sAr Es.

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iro ALL WHOM IT MAY concnnn Be it known that I, DANIEL Fr'rzennhfLn, of the city county, and State of-{New York, have invented an improvement in safes, tcrnied an Improved Eire andBurgiar-lroof Casket; and do hereby dcclarethat the following is a full, clear, and exact description thereof, reference being had to the c'cconipanying drawingQw-hich forms part of this specification. v V

The nature of iny-invention consists, in part, in the combination of several shells or cases, one within-the other, and one or more of which are corrugated, for strength to withstand the blowsjof a sledge, or thelilre, arid-f. one or more of which are made in sections, transverse 'or longitudinal, and hardened, to resist the operation of a. drillor drills. I also enclose therein an outer casing, and fill the remaining spaces with a suitable filling capable of repelling heat. 3 I

in the drawing annexed, the marks'of reference correspond in all the figures.

Figure l is a longitudinal section of the whole. I

Figure 2 is a transverse section'of the same.

Figure 3 represents the-end that is opened for access.

Figure 4 shows the cxtierior of the'corrugated shell or case.

I Figure 5 shows the solid end.

My improved fire and burglar-proof casket is, in general, composed, in pact, of a metal case, B, of anydesired contour, andcorrugated, in order to present a number of archeson the exterior thereof. In the interior of the corrugated" case B are fitted a number of longitudinal sections, so as to return. com-piste secured inner case or cylinder, G, and within the case 0, I insert a number of transverse sections, so as to form a complete third case or cylinder, D. I encase the Whole in an outer case or cylinder, A.

-- All of the aforesaid sections are made of hardened steel or metallic substance. I v

.To render the casket capable of resisting the action of fire, the spaces formed within and without thearches of the corrugated .case B are filled with any usual propelling-material. suclias calcinedgypsdm. I

The concave arches or depressions of the cylinderB are supported against pressure or the force of a blow thereon, (as of a sledge,) or otherwise, by the two inner cylinders, G D, while the convex arches also resist such pressure or blows, by reason of their form. i

The use of interior cylinders inserted in sections enables me to employ a harder substance therefor than could conveniently otherwise be made. I

-- The case or cylinder B is. solid at one end, and at tho other has a circular opening closed by a cylindrical plug or stopper, E. The solid end is formed of or has corrugations formed upon it, as seen in fig. 5, and for security against entering the safe by drills. h

I insert at the solid end, in the interior, a hardened metallic head, F. This I usually divide in two sections,' in order to enter-it easily through the open-ingot access when the same is rcade, preferably smaller than the inner diameter of the case B. This hardenedhcad should be nearly as thick as the two. cylinders '6 and D. To facilitate the entrance of thetransversc sections of the third'inner case or cylinder these may also'hc divided diametrically. Gthe'rivarmtions may be nfade, whichwill occur to the skilled artisan in constructingthis sort cf sa fe, and upon the principles abovc set forth.

What I elaiin a smy invention, and desire to secure by Letters Patent, is- 1. In the construction of safes forseeurity' the employment of the corrugated case or cylinder. In combination therewith, the outer cylinder or case, as described:

3. The inner cylinder or case in longitudinal sections, in combination with a case or cylinder to surround\ -the same'and hold it inv place.

4. The inner cylinder or case in transverse scctioii'sin combination with a suitable surrounding cylinder or case to hold said scctions in place. l

.5. The inserted metallic head, substantially as described. 6. In combination with the corrtgatcd case or cylinder, and the outer casing thereto or the inner case, the: filling inof the space fornied under the archesof said-corrugations and'other interstices, with a fire-proofing niaterinl, substantially asset forth.

' t DANIEL FITZGERALD. Witnesses: E; H. Snrrn, M. E. B. SMITH. 

